US11426532B2 - Needle guard with dual hinge functionality - Google Patents
Needle guard with dual hinge functionality Download PDFInfo
- Publication number
- US11426532B2 US11426532B2 US15/741,092 US201615741092A US11426532B2 US 11426532 B2 US11426532 B2 US 11426532B2 US 201615741092 A US201615741092 A US 201615741092A US 11426532 B2 US11426532 B2 US 11426532B2
- Authority
- US
- United States
- Prior art keywords
- needle
- hinge structure
- shield
- guard
- needle shield
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2250/00—Specially adapted for animals
Definitions
- the present disclosure relates to a needle guard arranged to shield a needle from accidental contact with an animal or human such as patients and medical personnel.
- a pointed hollow needle is well known in the medical art for the administration of solutions or suspensions, such as medicaments, to a human or animal.
- solutions or suspensions such as medicaments
- the needle After puncturing of the skin and introduction of the needle tip the content of a syringe typically connected to the rear part of the needle is administered to the human or animal through the hollow needle.
- the needle has then done its duty and is withdrawn from the human or animal.
- an unprotected withdrawn needle constitutes a serious health hazard due to the fact that it may be contaminated with e.g. infectious agents originating from the patient's blood or other body fluids, in combination with the needle tip's inherent ability to easily penetrate skin.
- the medical personnel who are handling the withdrawn needle may acquire an undesirable disease, e.g. HIV or hepatitis, if they accidentally contact the needle with their skin.
- an undesirable disease e.g. HIV or hepatitis
- U.S. Pat. No. 5,603,699 discloses a needle guard assembly comprising a mounting base and a jacket assembly pivotally mounted on the mounting base.
- the jacket assembly comprises a shield member, a lever member and activating means.
- the activating means are adapted for movement of the jacket assembly from a retracted position to a closed position around a needle.
- Disadvantages of this needle guard assembly include its complicated construction and inherent bulkiness. The former being associated with a large cost of production and the latter with at least an increased volume of bio-hazard waste. Furthermore, a multi-part needle guard such as this is associated with a relatively high cost of production and difficulties in its assembly.
- EP 0 887 082 A2 describes a safety cover which is pivoting around a point near the needle hub.
- the safety cover is folded forwards and to the side over the needle after injection and withdrawal of the needle from the skin.
- the pivoting safety cover is provided with a locking hook mechanism that mates with the needle hub upon locking, which in turn demands the manual push of the pivoting safety cover to be sufficient to overcome the resistance of the locking hook mechanism.
- This force needs to be relatively high, which increases the risk of the user not to lock the safety cover in e.g. a stressful situation.
- the safety cover may thus be left unlocked which results in a potential health hazard.
- the needle tip is not secured until the pivoting arm has been manually pushed against the needle shaft, before which the user still is susceptible to stung/cut.
- Additional safety covers of the prior art with a construction similar to the construction of the safety cover described in EP 0 887 082 A2, such as the safety cover disclosed in U.S. Pat. No. 4,982,842, may comprise an additional looking hook mechanism that locks around the shaft of the needle, or only a looking hook mechanism that locks around the shaft of the needle.
- the force needed to overcome the resistance of the locking hook mechanism needs, also in these cases, to be quite high. This force is also applied on the needle.
- the needle may therefore be broken or lost from the cooperation with the hub. This presents a danger to the user, since the user may be stung or cut on the broken/lost needle.
- None of above described needle guards protects the needle immediately after withdrawal of the needle from the skin. Hence, a user may accidently come into contact with the needle tip in the time span between withdrawal of the needle and activation of the needle guard by the user. It is well known that the patient often moves during the painful administration of medicaments through the needle, i.e. when the content of the connected syringe is injected. Such movement by the patient may result in involuntary withdrawal of the needle, leaving it exposed and without protection from accidental contact. It is estimated that 20 to 25% of all accidents in which medical personnel are injured by the needle occur during the actual injection of the syringe content.
- WO 2013/006134 discloses a needle guard for shielding of a needle.
- the needle guard of WO 2013/006134 occupies a large volume when the guard is packaged, transported and stored prior to its use by medical personnel on humans or animals. This increases the costs associated with each of the steps prior to the end use.
- the present disclosure seeks to mitigate, alleviate, circumvent or eliminate at least one of the above identified deficiencies in the art.
- an aspect disclosed herein relates to a needle guard for protecting a human or animal from accidental contact with a needle connected to said needle guard, comprising:
- a hinge structure connecting the mounting base to a needle shield, the hinge structure being adapted to pivot the needle shield relative to the mounting base from an open position in which the needle shield is separated from the needle, to a closed position in which the needle shield encloses the needle; and a needle shield hinge adjacent to the hinge structure and needle shield, the needle shield hinge being adapted to pivot the needle shield relative to the hinge structure.
- FIG. 1 is a side view of a needle guard in a half-open position according to one embodiment of the disclosure
- FIG. 2 is the needle guard of FIG. 1 in the open position prior to use
- FIG. 3 is a side view of the needle guard of FIG. 1 in the closed position.
- Figs. 1, 2, and 3 illustrate a needle guard 100 .
- the needle guard 100 broadly comprises four parts in the form of (i) a needle shield 110 , (ii) a hinge structure 120 , (iii) a needle shield hinge 133 , and (iv) a mounting base 140 .
- the needle shield 110 may be shaped as a rod, arm or other similar elongated structure that is able to receive and enclose a needle 200 during use as will be described further below.
- An elongated slot 115 is formed longitudinally on the needle shield 110 for allowing sideways entry and acceptance of the needle 200 .
- the ratio between the width of the elongated slot 115 to the diameter of the needle may be 10 to 1, 5 to 1, or preferably 2 to 1.
- the lower end portion of the needle shield 110 may be in contact with the mounting base 140 such that the entire length of the needle is enclosed by the needle shield 110 .
- the needle shield 110 also comprises a needle lock 117 in the slot 115 which securely engages the needle and therefore the needle shield 110 in the closed position during use so that I may not revert to the open position.
- the needle lock 117 may comprise one or several locking members extending from or forming a part of the needle shield 110 for example, a hook-shaped extension. If desired, the needle shield 110 may be provided with suitable color indicators correlating with differing needle sizes.
- the needle shield 110 also comprises an aperture 129 for fixedly receiving a spring plate 127 of the hinge structure 120 during use as will be described below.
- the needle shield 110 is connected to the mounting base 140 through hinge structure 120 .
- the hinge structure 120 comprises V-shaped spring member 124 connected to the mounting base 140 and a spring plate 127 connected to the spring member 124 .
- the spring member 124 comprises a press member 125 for applying pressure to the hinge structure 120 by way of a user's finger or thumb during injection of a medicament.
- the hinge structure 120 further comprises a toggle joint 121 adjacent to the mounting base 140 , a leg portion 122 adjacent to a needle shield hinge 133 , and a toggle joint knee 123 between the toggle joint 121 and the leg portion 122 .
- This arrangement provides for a dead-center toggle function in the hinge structure 120 that forces the needle shield 110 to one of two oppositely-disposed positions being the open position (shown in FIG. 2 ) or the closed position (shown in FIG. 3 ).
- the open position the needle shield 110 is remotely positioned from the needle 200 on the mounting base 140 so that the needle 200 is exposed and is able to penetrate the skin of a patient.
- the closed position the needle 200 is enclosed and protected by the needle shield 110 .
- the hinge structure 120 snaps the needle shield 110 into the closed position.
- the dead-center position of the hinge structure 120 corresponds to a dead-centre angle between the longitudinal extensions of the needle and the needle shield 110 . If the angle is less than the dead-centre angle the needle shield 110 strives toward the closed position ( FIG. 3 ) thereby receiving the needle in slot 115 . If the angle is greater than the dead-centre angle, the needle shield 110 strives toward the open position ( FIG. 2 ).
- the dead-centre angle may be in the range of 45 to 170°, such as 80 to 120° or 90 to 110°.
- a longer leg portion 122 increases the dead-center angle. Moving the point of attachment of spring member 124 further above the point of attachment of the toggle joint 121 decreases the dead-center angle.
- a needle shield hinge 133 is located adjacent to needle shield 110 and the leg portion 122 of hinge structure 120 .
- the needle shield hinge 133 permits pivoting of the needle shield 110 relative to the hinge structure 120 . This occurs independently from pivoting of the needle shield 110 relative to the mounting base 140 between open and closed positions as described above in relation to the hinge structure 120 .
- Needle shield hinge 133 may be formed by molding together thin sections of the leg portion 122 and needle shield 110 . Alternatively, a pin (not shown) may be used to form hinge 133 . Pivoting of the needle shield 110 about needle hinge 133 occurs freely by moving the needle shield 110 to any desired position or angle.
- the dual hinge functionality of the needle guard 100 is unique.
- the hinge structure 120 provides the first hinge function in the needle guard 100 by permitting pivotal movement of the needle shield 110 in relation to the mounting base 140 .
- This first hinge function is relied upon during and after injection of a medicament into a human or animal patient by the user of the needle guard 100 and prevents accidental contact of the patient and the user with the needle.
- the second hinge function in the needle guard 100 is provided by needle hinge 133 and allows for movement of the needle shield 110 to a more desirable position during packaging or storage prior to use of the needle guard 100 .
- a first hinge 150 may be located between the press member 125 and the spring plate 127 .
- a second hinge 152 may be located between the spring member 124 and the base 140 .
- a needle shield hinge 133 may be also referred to as a third hinge member which may be positioned between the guard 100 and the leg 122 .
- a fourth hinge 154 may be located between the toggle joint knee 123 and the toggle joint 121 .
- the mounting base 140 comprises a needle hub bore 141 extending through the mounting base 140 for securely fitting to and mating with a needle 200 or a needle hub 210 such that the needle extends distally from the mounting base 140 .
- the inner surface of the needle hub bore 141 has a size and shape corresponding to the outer surface of the needle 200 or needle hub 210 to achieve a secure fit and avoid movement of the needle.
- the needle hub bore 141 may be a conically shaped hole with a diameter that narrows in the same direction as the extension of the needle.
- the needle hub bore 141 may be provided with longitudinal recesses that correspond and mate with the longitudinal protrusions of standard needle hubs.
- the mounting base 140 is not movable in relation to a needle 200 arranged on the mounting base 140 .
- Use of the needle guard 100 may involve the following steps:
- the user withdraws the needle from the patient whereby the needle shield 110 automatically enters the closed position to enclose and protect the needle within slot 115 .
- the needle guard 100 may be made of a thermoplastic, plastic or polymeric material such as polypropylene (PP), high-density polyethylene (HDPE), polyamide (PA) and acrylnitrile-butadiene-styrene copolymer (ABS). These materials allow for manufacturing the needle guard 100 as a monolithically formed single article which minimizes manufacturing costs.
- the thermoplastic, plastic or polymeric material will be selected to achieve sufficient tenacity, rigidity, fatigue resistance, elasticity, and creep deformation resistance in the needle guard 100 .
- Manufacturing of the needle guard 100 comprises the steps of providing a thermoplastic, plastic or polymeric material as starting material for needle guard 100 and molding or injection molding the thermoplastic, plastic or polymeric material into one monolithically formed needle guard 100 .
- thermoplastic, plastic or polymeric material for construction of the needle guard 100 in comparison to metal include the increased convenience of molding a plastic, the ability to color code a plastic needle guard according to the needle size, and the higher chemical inertness and resistance to corrosion.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Environmental & Geological Engineering (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
a needle shield hinge adjacent to the hinge structure and needle shield, the needle shield hinge being adapted to pivot the needle shield relative to the hinge structure.
-
- Number Feature
- 100 needle guard
- 110 needle shield
- 115 elongated slot
- 117 needle lock
- 120 hinge structure
- 121 toggle joint
- 122 leg portion
- 123 toggle joint knee
- 124 spring member
- 125 press member
- 127 spring plate
- 129 aperture
- 133 needle shield hinge
- 140 mounting base
- 141 needle hub bore
Claims (9)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1550916 | 2015-06-30 | ||
SE1550916-9 | 2015-06-30 | ||
PCT/SE2016/050662 WO2017003363A1 (en) | 2015-06-30 | 2016-06-30 | Needle guard with dual hinge functionality |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2016/050662 A-371-Of-International WO2017003363A1 (en) | 2015-06-30 | 2016-06-30 | Needle guard with dual hinge functionality |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/894,385 Continuation US20220401659A1 (en) | 2015-06-30 | 2022-08-24 | Needle guard with dual hinge functionality |
Publications (2)
Publication Number | Publication Date |
---|---|
US20180185590A1 US20180185590A1 (en) | 2018-07-05 |
US11426532B2 true US11426532B2 (en) | 2022-08-30 |
Family
ID=57609318
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/741,092 Active 2037-03-10 US11426532B2 (en) | 2015-06-30 | 2016-06-30 | Needle guard with dual hinge functionality |
US17/894,385 Pending US20220401659A1 (en) | 2015-06-30 | 2022-08-24 | Needle guard with dual hinge functionality |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/894,385 Pending US20220401659A1 (en) | 2015-06-30 | 2022-08-24 | Needle guard with dual hinge functionality |
Country Status (4)
Country | Link |
---|---|
US (2) | US11426532B2 (en) |
EP (1) | EP3316945B1 (en) |
CN (1) | CN107847682B (en) |
WO (1) | WO2017003363A1 (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0489419A1 (en) | 1990-12-04 | 1992-06-10 | Arcusin Y Cia S.A. | A safety hood for hypodermic needles |
US5151089A (en) * | 1990-05-16 | 1992-09-29 | Kirk Iii William D | Retractable protective needle sheath |
US5242417A (en) * | 1992-01-13 | 1993-09-07 | Paudler Gary M | Self closing hinged syringe guard |
US5885249A (en) * | 1995-04-06 | 1999-03-23 | Nifco Inc. | Syringe with cap |
US5910130A (en) * | 1996-09-26 | 1999-06-08 | Becton, Dickinson And Company | Shield and actuator for needles |
US5913846A (en) * | 1996-06-13 | 1999-06-22 | Becton, Dickinson And Company | Shielded needle assembly |
US20050054986A1 (en) * | 2003-09-09 | 2005-03-10 | Simpson Roddi James | Fixed needle syringe with protective needle housing |
US20080208138A1 (en) * | 2007-02-26 | 2008-08-28 | Becton, Dickinson & Company | Syringe having a hinged needle shield |
SE1150633A1 (en) | 2011-07-05 | 2013-01-06 | Vigmed Ab | Needle protection with a dead position |
US20140135713A1 (en) * | 2011-07-05 | 2014-05-15 | Vigmed Ab | Needle guard with an active state and a passive state |
US20140296792A1 (en) * | 2013-03-29 | 2014-10-02 | Thomas Chun | Sharps guard |
WO2015097034A1 (en) | 2013-12-23 | 2015-07-02 | Iconovo Ab | Single dose dry powder inhaler |
US20160296712A1 (en) * | 2013-12-05 | 2016-10-13 | Metier Medical Limited | A safety clip |
-
2016
- 2016-06-30 CN CN201680038630.5A patent/CN107847682B/en active Active
- 2016-06-30 WO PCT/SE2016/050662 patent/WO2017003363A1/en active Application Filing
- 2016-06-30 US US15/741,092 patent/US11426532B2/en active Active
- 2016-06-30 EP EP16818346.5A patent/EP3316945B1/en active Active
-
2022
- 2022-08-24 US US17/894,385 patent/US20220401659A1/en active Pending
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5151089A (en) * | 1990-05-16 | 1992-09-29 | Kirk Iii William D | Retractable protective needle sheath |
EP0489419A1 (en) | 1990-12-04 | 1992-06-10 | Arcusin Y Cia S.A. | A safety hood for hypodermic needles |
US5312369A (en) * | 1990-12-04 | 1994-05-17 | Arcusin Carlos E | Safety hood for hypodermic needles |
US5242417A (en) * | 1992-01-13 | 1993-09-07 | Paudler Gary M | Self closing hinged syringe guard |
US5885249A (en) * | 1995-04-06 | 1999-03-23 | Nifco Inc. | Syringe with cap |
US5913846A (en) * | 1996-06-13 | 1999-06-22 | Becton, Dickinson And Company | Shielded needle assembly |
US5910130A (en) * | 1996-09-26 | 1999-06-08 | Becton, Dickinson And Company | Shield and actuator for needles |
US20050054986A1 (en) * | 2003-09-09 | 2005-03-10 | Simpson Roddi James | Fixed needle syringe with protective needle housing |
US20080208138A1 (en) * | 2007-02-26 | 2008-08-28 | Becton, Dickinson & Company | Syringe having a hinged needle shield |
CN101687083A (en) | 2007-02-26 | 2010-03-31 | 贝克顿·迪金森公司 | Syringe having a hinged needle shield |
SE1150633A1 (en) | 2011-07-05 | 2013-01-06 | Vigmed Ab | Needle protection with a dead position |
US20140135713A1 (en) * | 2011-07-05 | 2014-05-15 | Vigmed Ab | Needle guard with an active state and a passive state |
US20140296792A1 (en) * | 2013-03-29 | 2014-10-02 | Thomas Chun | Sharps guard |
US20160296712A1 (en) * | 2013-12-05 | 2016-10-13 | Metier Medical Limited | A safety clip |
WO2015097034A1 (en) | 2013-12-23 | 2015-07-02 | Iconovo Ab | Single dose dry powder inhaler |
Non-Patent Citations (1)
Title |
---|
Chinese Search Report for Chinese Patent Application No. 201680038630.5. |
Also Published As
Publication number | Publication date |
---|---|
EP3316945A4 (en) | 2018-12-05 |
WO2017003363A1 (en) | 2017-01-05 |
EP3316945A1 (en) | 2018-05-09 |
US20220401659A1 (en) | 2022-12-22 |
EP3316945C0 (en) | 2024-04-17 |
EP3316945B1 (en) | 2024-04-17 |
CN107847682A (en) | 2018-03-27 |
CN107847682B (en) | 2020-11-03 |
US20180185590A1 (en) | 2018-07-05 |
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